Compass, Magnetic, FL23233, Luftwaffe Ki-100 The directional gyro is powered

The directional gyro is powered pneumatically

Fairey Battle

The knob turns and rotates the barometric scale

It has a calibration mechanism

The LS-3 Loudspeaker was used during WWII with a variety of US Army Signal Corps receivers

Compass, Magnetic, FL23233, Luftwaffe Ki-100 The directional gyro is poweredHere is a WW2 era German Magnetic Compass FI. 23233, made by Ludolph, as used in aircraft of the Luftwaffe. This version has a gradient on the lens which indicates degree of climb or decent from + 20 degrees as the compass card tilts with the change in aircraft attitude. The fluid has turned slightly brown, but it remains an exceptional specimen. The upper mount remains attached. According to Aircraft Cockpits. com, this compass was used in aircraft